I think it's more like 4 or 5 minutes. And I'm betting there will be a sleeping bag you can craft ... either as part of the update or a mod.
I just think people should have a choice in features they can toggle on or off and not have those features all-or-nothing.
Look. I think within days, if not sooner, there will be mods I can use to put those features into any Difficulty level, not just Survival.
But not everyone can or will want to use those mods. Then there is the possibility of those mods not being maintained and an update makes them unusable. An official toggle option is best.